问题
I need a query using match_phrase along with fuzzy matching. However I'm not able to find any documentation to construct such a query. Also, when I try combining the queries(one within another), it throws errors. Is it possible to construct such a query?
回答1:
You would need to make use of Span Queries.
The below query would perform phrase match+fuzzy query for champions league say for e.g. on a sample field name which is of type text
If you'd want multiple fields, then add another must clause.
Notice I've mentioned slop:0 and in_order:true which would do exact phrase match, while you achieve fuzzy behaviour using fuzzy queries inside match query.
Sample Documents
POST span-index/mydocs/1
{
"name": "chmpions leage"
}
POST span-index/mydocs/2
{
"name": "champions league"
}
POST span-index/mydocs/3
{
"name": "chompions leugue"
}
Span Query:
POST span-index/_search
{
"query":{
"bool":{
"must":[
{
"span_near":{
"clauses":[
{
"span_multi":{
"match":{
"fuzzy":{
"testField":"champions"
}
}
}
},
{
"span_multi":{
"match":{
"fuzzy":{
"testField":"league"
}
}
}
}
],
"slop":0,
"in_order":true
}
}
]
}
}
}
Response:
{
"took": 19,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 3,
"max_score": 0.5753642,
"hits": [
{
"_index": "span-index",
"_type": "mydocs",
"_id": "2",
"_score": 0.5753642,
"_source": {
"name": "champions league"
}
},
{
"_index": "span-index",
"_type": "mydocs",
"_id": "1",
"_score": 0.5753642,
"_source": {
"name": "chmpions leage"
}
},
{
"_index": "span-index",
"_type": "mydocs",
"_id": "3",
"_score": 0.5753642,
"_source": {
"name": "chompions leugue"
}
}
]
}
}
Let me know if this helps!
来源：https://stackoverflow.com/questions/53541053/elasticsearch-match-phrase-query-and-fuzzy-query-can-both-be-used-in-conju